نتایج جستجو برای: Curvature attributes

تعداد نتایج: 108589  

ژورنال: ژئوفیزیک ایران 2015
Hojjat Ghorbanian Mohammad Barazesh Seyed-Hani Motavalli-Anbaran

This paper describes an edge detection method based on surface-derived attributes. The surface-derived attributes are widely used in the interpretation ofseismic datain two main categories: (1) derivative attributes including the dip angle and the azimuth; (2) derivative attributes including curvature attributes.    In general, the magnitude of the normal curvature of a surface (curvature attri...

Journal: :آب و خاک 0
احمدرضا پیله ور شهری شمس الله ایوبی حسین خادمی

abstract spatial prediction of soil organic carbon is a crucial proxy to manage and conserve natural resources, monitoring co2 and preventing soil erosion strategies within the landscape, regional, and global scale. the objectives of this study was to evaluate capability of artificial neural network and multivariate linear regression models in order to predict soil organic carbon using terrain ...

Journal: :آب و خاک 0
محسن باقری بداغ آبادی محمدحسن صالحی جهانگرد محمدی نورایر تومانیان عیسی اسفندیارپور بروجنی

abstract limitations of traditional (conventional) soil surveys and improvement of information technology have lead soil surveyors to invent new methods which are generally called digital soil mapping (dsm). the aim of these methods is the prediction of soil classes or soil properties based on easily-available or measuring environmental variables. the objective of this investigation is to study...

ژورنال: ژئوفیزیک ایران 2020
Mohammad Barazesh Seyed-Hani Motavalli-Anbaran

A quadratic surface can be fitted to potential-field data within 3×3 windows, which allow us to calculate curvature attributes from its coefficients. Phillips (2007) derived an equation depending on the most negative curvature to obtain the depth and structural index of isolated sources from peak values of special functions. They divided the special functions into two categories: Model-specific...

M, Omid M, Soltani R, Alimardani

Physical properties of fruits and vegetables are the subject of many researches because of its importance in designing of agricultural machinery. Banana fruit is one of important fruit. In this study some physical properties of banana fruit (Cavendish variety) were determined. Properties which were measured included weight of whole fruit peel and pulp weight, dimensions, surface area and projec...

2017
Motaz Alfarraj Haibin Di Ghassan AlRegib

In this abstract, we propose a multiscale fusion technique to enhance seismic geometric attributes, such as dip and curvature, which are very sensitive to noise present in seismic data. For a give seismic section, first, we construct a Gaussian pyramid that allows us to generate the seismic attribute at different resolutions (scales). Then, all attributes at the different scales are fused toget...

2013
Vincent Daval Fréderic Truchetet Olivier Aubreton

Geometric attributes such as curvature or surface orientation are additional information of the 3D points obtained after the scanning of an object. In the classic 3D chain, characterized by a sequential structure, these information are determined from the dense point cloud (from a 3D scanner). Then, they are used to reduce the amount of information and allows to obtain a simplified model. In th...

Journal: :international journal of agricultural science, research and technology in extension and education systems 2011
m, soltani r, alimardani m, omid

physical properties of fruits and vegetables are the subject of many researches because of its importance in designing of agricultural machinery. banana fruit is one of important fruit. in this study some physical properties of banana fruit (cavendish variety) were determined. properties which were measured included weight of whole fruit peel and pulp weight, dimensions, surface area and projec...

2007
Robert H. Erskine Timothy R. Green Jorge A. Ramirez

Terrain attributes are commonly used to explain the spatial variability of agronomic, pedologic, and hydrologic variables. The terrain attributes studied here (elevation, slope, aspect, and curvature) are estimated readily from digital elevation models (DEMs), but questions remain about how the accuracy and sample spacing of the elevation data affect the estimated attributes. The main objective...

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